In one click, you will find all the information you are interested in about ANTIQUE PLATINUM JEWELRY MARKS. We have collected the most complete and diverse information for you.
https://www.tentwothree.com/platinum_jewelry_information.asp
Many estate jewelry hallmarks will be PT900, indicating that the metal is 900 parts per 1000 of pure platinum. The remaining 100 part are usually made with iridium which makes the jewelry harder. 900 Plat - 100Irid - means platinum alloyed with 10% iridium. Pt also the chemical symbol - mark for platinum.
https://www.leaf.tv/articles/what-are-some-identifying-marks-on-a-platinum-ring/
Hallmarks and maker's marks help identify the origin of antique and period platinum rings. Hallmarks, also known as quality or purity marks, guarantee the purity or quality of a precious metal. They are expressed with numbers, symbols, letters or a combination thereof stamped, impressed or struck on platinum to indicate its fineness, according ...
https://www.liveabout.com/platinum-jewelry-information-2043747
Aug 17, 2017 · Here are some important platinum facts regarding content markings: Jewelry that contains at least 950 parts per thousand of pure platinum may be marked or described as "Platinum". Jewelry that contains 850, 900 or 950 parts per thousand of pure platinum may be marked "Plat" or "Pt" if a number is used in front of the term to disclose the amount ...Estimated Reading Time: 3 mins
https://www.invaluable.com/blog/guide-to-jewelry-marks/
Apr 06, 2020 · Jewelry Maker’s Marks: A Brief History. To be considered an antique, a piece of jewelry must be 100 years or older, while vintage jewelry must be more than 20 years old to be classified as such. “Retro” jewelry refers to pieces made during the 1940s and ‘50s and are characterized by the use of large and colorful gemstones.
https://www.langantiques.com/university/jewelry-makers-mark/
Jewelry Maker’s Mark. Maker’s marks are the initials or name of the manufacturing firm or other representative symbol stamped into a gold , silver or platinum item. Also called ‘Trademarks,’ they often provide the only evidence that a certain piece of jewelry has indeed been manufactured by a certain jewelry maker. When such marks are ...
https://www.langantiques.com/university/hallmarks-on-period-jewelry/
On a large percentage of antique jewelry these hallmarks are, due to various reasons, absent and estimations on the origin can only be done through careful observation and, if present, the correct interpretation of accompanying documentation. ... In 1974 a pictorial mark in the form of an orb was introduced as a purity mark for platinum.
https://www.gold-traders.co.uk/blog/simple-platinum-hallmark-guide/
Mar 14, 2011 · Optional platinum hallmarks. The following 3 marks are all optional. Under hallmarking legislation, there is no compulsorary requirement to show these additional marks, however they are often shown. Traditional Fineness Symbol. If your platinum item has a purity of 950 or 999, it may display the traditional orb mark.
https://www.langantiques.com/university/makers-marks-2/
Describe the Cartouche, Frame or Shape – Examples: circle or triangle. Words, single letters or monograms – Example: ORANGE BLOSSOM or A. City or country where a Maker worked or originated (this information is not usually contained within the mark but it’s something you may know or intuit based on other marks) Keep adding information to ...
Jewelry tools & jewelry displays, jewelry making tools plus beading supplies for the jeweler, beaders, hobbyist, craftsman. Metal clay, Beadalon, wire wrapping,
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